Multiwavelength Observations of an Eruptive Flare: Evidence for Blast Waves and Break-out
arXiv:1307.3720 · doi:10.1007/s11207-013-0303-y
Abstract
Images of an east-limb flare on 3 November 2010 taken in the 131 Å channel of the Atmospheric Imaging Assembly onboard the Solar Dynamics Observatory provide a convincing example of a long current sheet below an erupting plasmoid, as predicted by the standard magnetic reconnection model of eruptive flares. However, the 171 Å and 193 Å channel images hint at an alternative scenario. These images reveal that large-scale waves with velocity greater than 1000 km/s propagated alongside and ahead of the erupting plasmoid. Just south of the plasmoid, the waves coincided with type-II radio emission, and to the north, where the waves propagated along plume-like structures, there was increased decimetric emission. Initially the cavity around the hot plasmoid expanded. Later, when the erupting plasmoid reached the height of an overlying arcade system, the plasmoid structure changed, and the lower parts of the cavity collapsed inwards. Hot loops appeared alongside and below the erupting plasmoid. We consider a scenario in which the fast waves and the type-II emission were a consequence of a flare blast wave, and the cavity collapse and the hot loops resulted from the break-out of the flux rope through an overlying coronal arcade.
arXiv commentSolar Physics (published), 15 pages, 8 figures
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Cited by in corpus (15)
- Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares
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- First Detection of Plasmoids from Breakout Reconnection on the Sun
- Ensemble Prediction of a Halo Coronal Mass Ejection Using Heliospheric Imagers
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- CME-Driven and Flare-Ignited Fast Magnetosonic Waves Successively Detected in a Solar Eruption
- Formation and Eruption of a Small Flux Rope in the Chromosphere Observed by NST, IRIS, and SDO
- Multiwavelength observation of a large-scale flux rope eruption above kinked mini-filament
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- Observation of a Metric Type N Solar Radio Burst
- Spectral Power-law Formation by Sequential Particle Acceleration in Multiple Flare Magnetic Islands
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- Statistical relationship between the succeeding solar flares detected by the RHESSI satellite